gloria, andy, david, guys, thanks very much. >>> up next, the historic nuclear agreement with iran perhaps teetering on the brink of secretary of state john kerry as he tries to talk some skeptical lawmakers out of imposing new u.s. sanctions. >>> plus, the handshake seen around the world. this impromptu greeting between president obama and cuba's raul castro an omen? twins. i didn't see them coming. i have obligations. cute obligations, but obligations. i need to rethink the core of my portfolio. what i really need is sleep. introducing the ishares core, building blocks for the heart of your portfolio. find out why 9 out of 10 large professional investors choose ishares for their etfs. ishares by blackrock. call 1-800-ishares for a prospectus which includes investment objectives, risks, charges and expenses. read and consider it carefully before investing. risk includes possible loss of principal. [ chicken caws ] [ male announcer ] when your favorite food starts a fight, fight back fast with tums. heartburn relief that neutralizes acid on contact and goes to work in seconds. ♪ tum, tum